Tank for electric apparatus



S. E. JOHANNESEN.

TANK FOR ELECTRIC APPARATUS.

APPLICATION FILED APR. 30, 1919.

A Patented Apr. 12, 1921.

Inventor Svehd 2.11 ohannes en y 4. W

His Attorney;

UNITED STATES PATENT OFFICE.

SVEND E. JOHANNESEN, OF PITTSFIELD, MASSACHUSETTS, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION NEW YORK.

TANK FOR ELECTRIC APIi ARATUS.

. Specification of Letters Patent. Patented Apr, 12, 1921.

Application filed April 30, 1919. SerialNo. 293,775.

To all whom it may concern Be it known that I, SVEND E. JoHAN- NESEN, a citizen of the United States, residin at Pittsfield, county of Berkshire, State of Massachusetts, have invented certain new and useful Improvements in Tanks for Electrical Apparatus, of which the followin is 'a specification.

y invention relates particularly but not entirely to those tanks for electrical apparatus which are hung on poles. Transformers of some sizes are an example of electrical apparatus often thus mounted. Such tanks contain the electrical apparatus submerged in a fluid, generally oil, which receives the heat generated in the apparatus and conveys it to the walls of the tank where it is dissipated to the surrounding atmosphere. The object of my invention is to provide a tank for electrical apparatus which is simple, cheap and economic in the labor and material required. in its manufacture, and which has a large area for the cooling of the submerging fluid. My invention is particularly applicable to tanks made of cast metal.

The tank of my invention has a body portion to contain the electrical apparatus, and attached thereto one or more hollowarcuate receptacles appended to and opening into the body portion at the ends of the are or arcs, the arcuate receptacles being generally vertically extended and partially envelop the body of the tank so that the natural action of the air of the atmosphere may cool the fluid therein most efficiently.

In the accompanying drawing and following description I have illustrated and described in some detail the best embodiments of my invention of which I am now aware. Figure 1 is a plan view, partly in section, of a transformer tank embodying my invention. Fig. 2 is an elevation, partly in section, of the structure'of Fig. 1.

The tank of the drawing comprises a body portion 1 in which is contained the electrical apparatus 2. A cover 3 closes the opening in the top of the tank through which the apparatus 2 is introduced and removed. The body portion may be provided with any suitable or desirable bushing pockets, like that at 5 for example, etc.; hooks or other means 6 for hanging the tank on the pole are preferably connected to the body portion'of thetank which carries the most tion 1 of the tank are two hollow arcuate receptacles 8 and 9 which may extend along substantially and partially envelop the whole length of the body portion 1, as shown in the drawing. These two arcuate portions are disposed diametrically opposite 'each other and are connected to the body portion at the ends 10 of the arcs. Also at these ends 10, the arcuate portions open into the body portion 1 of the tank as shown at 11; each of these passages or openings 11 extends lengthwise of the tank from substantially the top of the adjacent arcuate portions to substantially the bottom thereof. Each. of the arcuate receptacles 8 and 9 extends vertically as appears from the drawing, and as a result it will be seen that the fluid therein is quite efliciently cooled by the natural upward flow of the air of the surrounding atmosphere. This air not only passes upwardly over the outer surface of the arcuate receptacles 8 and 9, but also passes upwardly through the opening between each arcuate portion and the adjacent wall of the body portion 1, and thereby cools the adjacent surface of the body portion and inner surface of the arcuate portion. The body portion 1 contains oil or other suitable insulating and cooling fluid submerging the electrical apparatus 2, and by reason of the passages 11 this submerging fluid fills the arcuate receptacles 8 and 9 to the same level as the body portion 1. The fluid in the body portion 1 freely changes with the cooler fluid in the arcuate receptacles 8 and 9 as it is heated by the apparatus in the portion 1.

Accordingly it will be seen that the tank of my invention offers a great amount of surface to the action of the air of the atmosphere for the purpose of dissipating the heat generated in the electrical apparatus 2, and is efiicient in operation; it is also evident that the tank is simple, cheap and economic in the labor and material required in the manufacture, especially if made of cast metal.

While I have illustrated in the accompanying drawing and described herein in some detail the best embodiment of my invention of which I am now aware, it will be understood that this embodiment is merely illustrative of my invention and that my invention is not limited thereto but is set forth in the following claims.

What I claim as new, and desire to secure by Letters Patent of the United States, is

1. A tank for electrical apparatus comprising a body portion and a hollow hori zontally arcuate receptacle partially enveloping the body portion and connected therewith, arranged to open into said body portion at the ends of the arc.

2. A tank for electrical apparatus comprising a body portion, two hollow, vertically extending, horizontally arcuate receptacles partially enveloping the body portion and diametrically disposed on opposite sides of the tank connected therewith and opening into said body portion at the ends of the arcs, and means for hanging the tank connected to the body portion between said arcuate portions.

In witness whereof, I have hereunto set my hand this twenty-fourth day of April, 1919.

SVEND E. J OHANNESEN. 

